Evidence-Based Recommendations and Best Practices for Promoting Healthy Eating Behaviors in Children 2 to 8 Years
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Evidence-Based Recommendations and Best Practices for Promoting Healthy Eating Behaviors in Children 2 to 8 Years Technical Report | October 2021 Healthy Eating Research A National Program of the Robert Wood Johnson Foundation
Healthy Eating Research Evidence-Based Recommendations and Best Practices for Promoting Healthy Eating Behaviors in Children 2 to 8 Years Technical Report | October 2021
Expert Panel Members Jennifer Fisher, PhD, MA, Panel Co-Chair Lori A. Francis, PhD Professor, Department of Social and Behavioral Sciences Associate Professor, Department of Biobehavioral Health Associate Director, Center for Obesity Research and Education Penn State University Temple University State College, Pennsylvania Philadelphia, Pennsylvania Maureen M. Black, PhD Julie Lumeng, MD, Panel Co-Chair Professor, Department of Pediatrics Professor of Pediatrics, Medical School University of Maryland School of Medicine Professor of Nutritional Sciences, School of Public Health Baltimore, MD University of Michigan Distinguished Fellow Ann Arbor, Michigan RTI International Research Triangle Park, North Carolina Alison Tovar, PhD, MPH Associate Professor, Department of Nutrition & Food Sciences Monica L. Baskin, PhD University of Rhode Island Professor, Division of Preventive Medicine South Kingston, Rhode Island University of Alabama at Birmingham School of Medicine Adjunct Associate Professor of Behavioral and Social Sciences, Birmingham, Alabama School of Public Health Brown University Rafael Pérez-Escamilla, PhD Providence, Rhode Island Professor of Public Health, Social and Behavioral Sciences Jason A. Mendoza, MD, MPH Principal Investigator, Yale-Griffin CDC Prevention Research Professor of Public Health Sciences, Fred Hutchinson Cancer Center (PRC) Research Center Director, Office of Public Health Practice Professor of Pediatrics, University of Washington School of Director, Global Health Concentration Medicine Director, Maternal Child Health Promotion Program Investigator, Seattle Children’s Research Institute Yale School of Public Health Seattle, Washington New Haven, Connecticut Jerica Berge, PhD, MPH, LMFT Sarah Bowen, PhD, MS Professor and Vice Chair, Department of Family Medicine and Professor, Department of Sociology and Anthropology Community Health North Carolina State University University of Minnesota Medical School Raleigh, North Carolina Minneapolis, Minnesota Sheryl O. Hughes, PhD Kirsten K. Davison, PhD Associate Professor, Pediatrics-Nutrition Donahue and DiFelice Endowed Chair USDA/ARS Children’s Nutrition Research Center Associate Dean for Research Baylor College of Medicine Boston College School of Social Work Houston, Texas Chestnut Hill, Massachusetts Stephanie Anzman-Frasca, PhD Kyung Rhee, MD, MSc, MA Associate Professor of Pediatrics Professor of Pediatrics, Vice Chair of Equity, Diversity, University at Buffalo and Inclusion Buffalo, New York Chief, Division of Child and Community Health Susan L. Johnson, PhD Medical Director, Medical Behavioral Unit, Rady Children’s Section of Nutrition, Department of Pediatrics Hospital of San Diego, Department of Pediatrics University of Colorado Denver, Anschutz Medical Campus University of California, San Diego Aurora, CO San Diego, California 2 October 2021 | Technical Report
Panel Conveners Suggested Citation Mary Story, PhD, RD Fisher J, Lumeng J, Miller L, Smethers A, Lott M. Evidence- Director, Healthy Eating Research Based Recommendations and Best Practices for Promoting Professor, Global Health and Community and Family Medicine Healthy Eating Behaviors in Children 2 to 8 Years. Associate Director of Education and Training Durham, NC: Healthy Eating Research; 2021. Available at: Duke Global Health Institute https://healthyeatingresearch.org. Duke University Durham, North Carolina Megan Lott, MPH, RD Acknowledgements Deputy Director, Healthy Eating Research Duke Global Health Institute The expert panel was supported by Healthy Eating Research Duke University (HER), a national program of the Robert Wood Johnson Durham, North Carolina Foundation. HER and the authors thank the expert panel members for their engagement and contributions throughout the development of the recommendations. Mary Story, Panel Support PhD, RD (Director, HER) provided guidance and counsel throughout the process, as well as editorial input and review. Alissa Smethers, PhD, RD, LDN Lauren Dawson, MPH (Communications and Program Postdoctoral Fellow, Monell Chemical Senses Center Associate, HER) and Emily Callahan, MPH, RDN (EAC Philadelphia, Pennsylvania Health & Nutrition, LLC) provided editorial input and review Lindsey Miller, MPH of the technical report and executive summary. We would Research Analyst, Healthy Eating Research also like to thank Jamie Bussel, MPH (Robert Wood Johnson Duke Global Health Institute Foundation) for her guidance and counsel throughout the Duke University expert panel process. Durham, North Carolina Lexi Wang Graduate Student Worker, Healthy Eating Research Duke Global Health Institute Duke University Durham, North Carolina Evidence-Based Recommendations and Best Practices for | October 2021 3 Promoting Healthy Eating Behaviors in Children 2 to 8 Years
Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Purpose and Aim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Rationale and Conceptual Frameworks and Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Building on the Foundations of Responsive Approaches to Feeding Infants and Toddlers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Conceptual Model and Frameworks Informing the Expert Panel’s Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Background: The Typical Development of 2- to 8-Year-Olds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Growth Across Domains of Development from Ages 2 to 8 Years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Dietary Patterns of Children Ages 2 to 8 Years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Development of Food Acceptance during Childhood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Development of Healthy Appetites and Growth during Childhood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Methodology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Expert Panel Methodology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Literature Review Methodology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Development of Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Key Considerations for Reviewing the Evidence and Developing Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Narrative Review of the Evidence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Parenting Styles, Feeding Styles, and Food Parenting Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Fathers, Other Caregivers, and the Family System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Promoting Food Acceptance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Promoting Healthy Appetites and Growth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Evidence-Based Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Recommendations for Promoting Acceptance of Healthful Foods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Recommendations for Promoting Healthy Appetites and Growth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Implementation Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Family Economics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Early Care and Education Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 National School Meal Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Health Care System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Food and Nutrition Assistance Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Food and Beverage Marketing Targeting Children . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Priorities for Future Research . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Research Needs on the Development of Food Acceptance during Childhood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Research Needs on the Development of Healthy Appetites and Growth during Childhood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Appendices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 4 October 2021 | Technical Report
Definitions Appetite:1 Appetite is defined as an instinctive or natural desire in the early eating environment shapes subsequent food to eat and is described by hunger, satiation, and satiety. Hunger acceptance development. refers to biological cues and underlying processes that lead to the initiation of eating, whereas satiation refers to cues and processes Food neophobia:6 A tendency to avoid or refuse new or that bring an eating episode to an end, and satiety refers to cues unfamiliar foods. Food neophobia is a developmentally and processes that inhibit further eating until hunger returns. appropriate reaction for young children that generally resolves with repeated exposure. Caregiver:2 A person who provides direct care to a child with activities of daily living. Caregivers (e.g., parents, grandparents, Food parenting practices:7 The intentional (i.e., goal- guardians, childcare providers) have the capacity to influence the oriented) or unintentional behaviors and actions performed development of healthy eating behaviors among children 2 to 8 by a parent that influences their child’s behaviors and actions. years by shaping the physical and social environments in which Food parenting practices are thought to reflect three higher eating occurs, by serving as social role models that children learn order dimensions: to emulate, and by using food parenting practices to guide and ■ Structure:7 The organization of children’s environments to socialize children’s experiences related to eating. facilitate children’s competence to engage in healthy behaviors Feeding styles:3 Feeding styles represent the application of and avoid unhealthy behaviors, such as creating meal- and parenting styles to feeding practices and are defined as the broad snack-time routines for a child, and providing consistency in approach used by caregivers during eating episodes, including the atmosphere and the amounts and types of foods available. the emotional climate. Like parenting styles, feeding styles are ■ Autonomy support:7 Supporting the child’s developing characterized in terms of demandingness and responsiveness. psychological autonomy (e.g., giving choices) and Demandingness refers to how much the parent encourages independence by supporting of the child’s self-feeding or controls eating, and responsiveness refers to how parents skills, engagement with food, choice and preferences, and respond to the child’s cues and needs to encourage eating and nutritional knowledge. support children’s developing autonomy. ■ Coercive control:7 Parents’ pressure, intrusiveness, and ■ Authoritative:4 Authoritative parenting styles provide dominance in relation to children’s feelings, thoughts, reasonable expectations for their child, set limits, foster child and behaviors. autonomy, respect the child’s opinion, provide warmth, and exhibit both high responsiveness/warmth and high Healthy growth:8 Physical growth rates vary by age and with demandingness/control. Authoritative feeding styles actively changes in children’s energy and nutrient needs. Growth encourage child eating using non-directive behaviors and are is assessed by comparing a child’s weight and/or height to responsive to the child’s eating cues and needs for autonomy. established norms. The Centers for Disease Control and Prevention provide age- and sex-specific growth charts for ■ Authoritarian:4 Authoritarian parenting styles employ evaluating growth of children aged 2 to 8 years and include power-assertive behaviors with their child and are generally indices of weight-for-age, stature-for-age, and body mass index- unresponsive to the child’s needs. Authoritarian feeding for-age. Healthy patterns of growth show a consistent trajectory styles use highly directive behaviors to influence eating in an over time. Any major shifts in growth patterns indicate the need unsupportive way and are not responsive to the child’s eating for further assessment. cues and needs for autonomy. Parenting styles:7 A constellation of parental attitudes and ■ Indulgent:4 Indulgent parenting styles display warmth and beliefs toward child rearing, which create an emotional climate acceptance, but lack the necessary monitoring behaviors through which parental practices are expressed, including needed for children’s developing autonomy. Indulgent the quality of parent-child interactions. Parenting styles feeding styles make few demands on the child to eat, but are reflect the intersection of two independent dimensions— responsive to the child’s eating cues and needs for autonomy. demandingness (i.e., expectations for self-control, limit ■ Uninvolved:4 Uninvolved parenting styles are not appreciably setting) and responsiveness (i.e., sensitivity or nurturing). interactive and make few demands on children. Uninvolved There are four types of parenting styles: (1) authoritative (high feeding styles make few demands on the child to eat and demandingness, high responsiveness); (2) authoritarian (high are not responsive to children’s eating cues and needs demandingness, low responsiveness); (3) indulgent/permissive for autonomy. (low demandingness, high responsiveness); and (4) uninvolved/ neglectful (low demandingness, low responsiveness). Food acceptance:5 The level of liking of a particular food. The biology of taste provides a foundational guide for food Picky eating:6 Characterized by consuming a limited type and acceptance (e.g., easily accepting sweet tastes and rejecting amount of foods, unwillingness to try new foods, and rejecting bitter tastes), while children’s experiences and learning foods based on certain sensory characteristics or textures. Evidence-Based Recommendations and Best Practices for | October 2021 5 Promoting Healthy Eating Behaviors in Children 2 to 8 Years
Introduction Purpose and Aim Childhood is a period of tremendous cognitive, socio- emotional, and physical development. Nutrition plays a vital The Dietary Guidelines for Americans, revised every role in growth, development, and overall health, as well as five years, provide evidence-based recommendations in the prevention of obesity and other lifelong, diet-related about what foods and beverages to consume, and in chronic diseases.9 Childhood is also recognized as a critical what amounts, to promote health, prevent disease, period for the development of eating behaviors and habits that and meet nutrients needs across the lifespan. However, reflect a complex interplay of biological predispositions for the DGAs have not provided science-based advice or taste preferences and early experiences and learning in diverse detailed recommendations on how to feed children. environments, which ultimately serve as a child’s general Guidance on both what and how to feed children is orientation to eating.10,11 critical for the development of healthy eating behaviors, food acceptance, and achieving a healthy weight. The home is the first fundamental food and eating environment in which a child’s eating habits emerge and it remains a critical To address this critical information gap, Healthy environment throughout childhood. Research conducted over Eating Research convened a national panel of experts the past four decades has highlighted the powerful role parents to develop evidence-based recommendations and best play in shaping the family food environment, both by providing practices for promoting healthy nutrition and eating a model of eating behavior that children learn to emulate and by behaviors in typically developing children from 2 to 8 shaping a variety of interactions through which eating behaviors years of age. are socialized.12-14 Children’s early experiences and learning about foods and eating are also shaped by diverse interactions outside the home, including with other caregivers and peers, such as in early care and education and eventually school and after-school Recommendations reflect extensive basic and applied research settings. These interactions expose children to a wide range of expertise of panel members on topics including children’s food eating environments and social influences. Thus, all caregivers preferences and eating behaviors, parenting styles, feeding styles, who routinely care for and feed children have the capacity to food parenting practices, settings where children receive care, influence the development of healthy eating behaviors. child obesity, and cultural and socioeconomic influences.16 Data from the 2017-2018 National Health and Nutrition This report includes the following nine sections: Examination Survey indicate that U.S. children 2 to 5 years of age consume approximately 75 percent of daily energy intake 1. Introduction to children’s eating behaviors; at home highlighting the important role of parents in shaping the early development of children’s eating behaviors.15 However, 2. Rationale for developing recommendations and approximately 60 percent of U.S. children under the age of 5 presentation of conceptual frameworks and models that are in a non-parental childcare arrangement. Further, by the informed this work; time children reach school age, somewhere between 33 and 38 percent of daily energy intake occurs outside the home. These 3. Background on the typical development of 2- to 8-year- trends underscore that children’s eating occurs and is shaped olds, including growth and dietary patterns, and the by caregiving and food environments in a variety of settings, development of food acceptance and healthy appetites including home, childcare, school, and other places where and growth; children spend a large portion of their time and eating occurs such as homes of relatives or friends. 4. Methodology used to develop these recommendations; This report presents evidence-based recommendations for 5. Review of the evidence considered; promoting healthy eating behaviors in children aged 2 to 8. Recommendations reflect expert consensus on current 6. Recommendations for promoting food acceptance and scientific knowledge in two broad areas: (1) promoting healthy appetites and growth; acceptance of healthful foods; and (2) promoting healthy appetites and growth. Research on the development of 7. Considerations for implementing the recommendations; children’s eating behaviors is relatively new, but rapidly evolving. The recommendations in this report were developed 8. Future research needs; and through a review of scientific research and consensus of a panel of national experts with diverse expertise in nutrition, 9. Conclusions. pediatrics, psychology, child development, and sociology. 6 October 2021 | Technical Report
Rationale and Conceptual Frameworks and Models Building on the Foundations of Responsive Approaches responsive feeding and sleeping routines. Economic and social to Feeding Infants and Toddlers determinants of health, including income, education, and home environments and resources were highlighted as important A child’s first 1,000 days (conception through 24 months of considerations for understanding and implementing responsive age) is a dynamic period for the development of feeding skills, feeding. The recommendations presented in this report build food acceptance patterns, and growth. While preferences on the foundations of those guidelines and focus on promoting for the basic tastes (i.e., sweet, salty, sour, bitter, umami) are healthy eating behaviors in children 2 to 8 years old. biologically determined, preferences for foods must be learned and are acquired through experiences shaped by caregiving. Conceptual Model and Frameworks Informing the In 2017, Healthy Eating Research, a national program of Expert Panel’s Approach the Robert Wood Johnson Foundation, released “Feeding Guidelines for Infants and Young Toddlers: A Responsive The expert panel’s identification of key elements necessary for Parenting Approach”17 with the goal of empowering caregivers promoting children’s healthy eating behaviors is informed by to promote optimal nutrition and development by offering the socioecological model of children’s weight and dietary intake healthier food and beverage options in response to child hunger shown in Figure 1. The model is adapted from prior work and satiety cues. A diverse panel of experts was brought together focused on child obesity,20,21 and highlights the multiple levels of to synthesize the scientific literature and develop evidence-based influence ranging from biology to culture. feeding guidelines for caregivers that focused on what and how to feed infants and toddlers. That panel also aimed to inform Frameworks for parenting and feeding styles and for food inclusion of dietary guidance for children under 2 years of age parenting practices guided the panel’s conceptualization of healthy in the U.S. Dietary Guidelines for Americans (DGA); the DGA eating and illustrated the role of caregivers. The literature on included recommendations for this age group for the first time children’s healthy eating and obesity prevention has traditionally in the 2020-2025 edition.18 included a substantial focus on the proximal influence of parents as key agents of change in shaping children’s eating behaviors Responsive feeding approaches are characterized by emotional and weight gain. But to more fully examine how parents support and the provision of developmentally appropriate influence children’s eating habits, it is necessary to understand foods, eating environments, and responses to child hunger and the difference between the concepts of parenting, parenting fullness cues.17,19 The 2017 report concluded that principles of styles, feeding styles, and food parenting practices. “Parenting” responsive feeding associated with healthy eating are critical is the term generally used to explain how a parent influences a for fostering optimal child development and growth and child’s behaviors and development, whereas “parenting style” is a foundational for food acceptance. Guidelines were developed constellation of parental attitudes and beliefs toward child rearing, separately for infants and toddlers and covered a broad range which create an emotional climate through which parental of feeding aspects, including what to feed, interpretation of practices are expressed.22 Parenting styles are characterized in hunger and fullness cues, how to introduce new foods, and terms of demandingness (i.e., expectations for self-control, limit Figure 1. Socioecological Model of Children's Weight COMMUNITY Food and Dietary Intake advertising Culture Parenting FAMILY Child feeding style practices Peer behavior Sibling CHILD behavior Modeling Socioeconomic Eating Weight & Dietary Biology of eating status behavior intake behavior Food in Temperament School the home Nutrition Parental eating knowledge behavior Policy Child care Neighborhood food accessibility Evidence-Based Recommendations and Best Practices for | October 2021 7 Promoting Healthy Eating Behaviors in Children 2 to 8 Years
setting) and responsiveness (i.e., sensitivity or nurturing). These In contrast to parenting and feeding styles, food parenting dimensions are used to describe four types of parenting styles: (1) practices are specific goal-directed parent actions or behaviors authoritative; (2) authoritarian; (3) permissive/indulgent; and (4) designed to influence children’s eating behaviors.22 Research on uninvolved/neglectful (Table 1). food parenting practices, primarily led by Leann Birch, began to receive increasing attention in the scientific literature in the This framework of general parenting style, developed in the late 1990’s.25 Food parenting practices are conceptualized to be 1960’s by Diana Baumrind,23 began to be applied to feeding relatively more amenable to change than parenting styles and styles in the mid-2000’s.24 “Feeding styles” are the broad approach therefore are often targets of interventions that aim to influence that parents take to feed children, and the emotional climate in children’s eating behaviors. which feeding occurs. Similar to parenting styles, feeding styles are generally conceptualized as consisting of two dimensions: (1) The most contemporary conceptualization of food parenting demandingness, which refers to how much the parent encourages is represented in a model set forth by Vaughn et al.,7 which or controls eating (e.g., limit setting, rules, expectations), and provides the framework for food parenting used in this (2) responsiveness, which refers to how parents respond to report (Figure 2). Many different types of food parenting the child’s cues and needs to encourage eating and support practices have been identified and are broadly described in children’s developing autonomy. There are also four types of three dimensions: coercive control, structure, and support feeding styles (Table 2). for child autonomy (Table 3). Food parenting practices reflecting coercive control, such as intrusiveness and pressure, are thought to be counterproductive to the development of Figure 2. Conceptualization of Food Parenting (Vaughn et al, Nutrition Reviews, 2016) Restriction Food-based threats Parent's pressure, and bribes to eat Pressure to eat intrusiveness, and Coercive dominance in relation to Food-based threats Threats and bribes Control children's feelings and and bribes to behave thoughts, as well as Using food to control their behaviors Non-food incentives negative emotions attitudes and beliefs, knowledge, resources (financial, time), values, etc. to eat Precursors or determinants of Food Parenting Practices: ability, Rules and limits Limited/guided choices Atmosphere of meals Monitoring Distractions Meal and snack routines Family presence Parent's organization of Food Parenting children's environment Modeling Structure Meal and snack Practices to facilitate children's schedule competence Food availability Food accessibility Neglect Unstructured practices Indulgence Nutrition education Child involvement Encouragement Promoting psychological Autonomy autonomy and Support or Praise encouragement of Promotion independence Reasoning Negotiation 8 October 2021 | Technical Report
Table 1. Parenting Styles Dimensions Parenting Styles Characteristics Demandingness Responsiveness Nurturing, affectionate, non-punitive, discipline through Authoritative High High guidance, open communication Strict, inflexible, high expectations, high supervision, Authoritarian High Low obedience Permissive Low High Nurturing, affectionate, few or inconsistent boundaries Uninvolved Low Low Emotionally detached, inconsistent boundaries Table 2. Feeding Styles Dimensions Feeding Styles Characteristics Demandingness Responsiveness Parental involvement, nurturance, reasoning, and structure Authoritative High High during feeding Restrictive, punitive, rejecting, and power-assertive behaviors Authoritarian High Low during feeding Warmth and acceptance in conjunction with a lack of Indulgent Low High monitoring of the child’s eating behaviors Little control and involvement with the child during Uninvolved Low Low eating episodes Table 3. Food Parenting Practices Food Parenting Definition Examples Dimensions Parental pressure, intrusiveness, and Restriction, pressure to eat, threats and bribes, using Coercive Control dominance in relation to children’s feelings, food to control negative emotions thoughts, and behaviors Parents’ organization of children’s environment Rules and limits, limited/guided choices, monitoring, to facilitate children’s competence in Structure routines, modeling, food availability, accessibility, engaging in healthy behaviors and avoiding and preparation unhealthy behaviors Autonomy support Promoting psychological autonomy and Nutrition education, child involvement, encouragement, or promotion encouragement of child’s independence praise, reasoning, negotiation Evidence-Based Recommendations and Best Practices for | October 2021 9 Promoting Healthy Eating Behaviors in Children 2 to 8 Years
healthful eating behaviors. Alternatively, practices providing Background: The Typical Development structure are believed to promote healthful eating behaviors of 2- to 8-Year-Olds and discourage unhealthful behaviors by organizing the environment to facilitate these outcomes. Similarly, practices Growth Across Domains of Development from Ages 2 that support children’s autonomy are believed to support healthy to 8 Years eating behaviors by providing encouragement and support of independence and internalization of healthful behaviors. It is important to recognize that the development of children’s eating behaviors is largely dependent upon overall child Different food parenting practices have different effects at development, traditionally defined in four major domains: different ages. For example, among children 7 and older, motor, cognitive, language, and social/emotional. Despite structured guidance/rule-making is more effective in preventing great variation in development across these domains between unhealthy eating, while for children 6 and younger, rewarding individual children, key developmental milestones can be tied with verbal praise is more effective in promoting healthy eating to certain age ranges. The panel applied established evidence on and in preventing unhealthy eating.26,27 While most of the the stages of child development to identify key milestones in the literature on food parenting practices has focused on controlling development of children’s eating behaviors.29 A general overview practices, including restriction, monitoring, and pressure to of typical development and how each may relate to eating eat,28 there are a growing number of studies assessing how behavior is provided in Table 4. Gross motor development practices focused on structure and autonomy support impact has been omitted given it is less related to eating behavior; dietary behaviors and weight status. instead, more detail has been included on fine-motor and oral- motor development. Table 4. Growth Across Domains of Development Between ages 2 and 3 years, children can eat without assistance. They can use a spoon to scoop food and a fork to stab food (though they may not always successfully get the food to their mouths). Children can use straws effectively, but are just beginning to use an open-mouthed cup independently. Children are able to chew with a closed mouth and can manage more textured foods like raw vegetables and meat. By this age, children have acquired molars, and are learning to chew and grind with their molars efficiently. Motor Development Between ages 4 and 5 years, children can spread and cut with a knife. They can drink from an open- mouthed cup without assistance and without spilling. Between ages 5 and 8 years, children can use a fork and knife together to cut food and are able to use cutlery without being too messy. Between ages 2 and 3 years, children can match and sort by shape and color (e.g., separate the green spherical peas from the orange cubed carrots). They understand the concept of “two” (e.g., “you can have two cookies”) and the idea of counting. They know common colors (e.g., tomatoes are red, bananas are yellow). Children this age begin to be able to bargain. By age 4 years, children understand the concepts of “same” and “different” (e.g., “that is the same peanut butter that we eat at home”). Children this age begin to understand time (e.g., “snack time is in one hour,” “you can have that candy tomorrow”). Cognitive Development By age 5 years, children can count ten or more items (e.g., “you can get yourself 10 crackers”) and understand consecutive concepts (big, bigger, biggest). Children this age are aware of rules and will test boundaries by arguing the rules. Between ages 5 and 8 years, children begin to better understand others’ perspectives, and that other people can have different opinions from their own. They begin to understand that objects can be categorized in different ways (e.g., vegetables vs. fruits; or as organic vs. not). Children this age can imagine the consequences of something happening without it actually happening (e.g., “What will happen if we leave the casserole in the oven too long?”). 10 October 2021 | Technical Report
Between ages 2 and 3 years, children can follow simple and familiar 2-step instructions (e.g., “Sit down and eat your cereal.”). They can discern affect and meaning based on the speaker’s tone of voice (e.g., a stern, “Eat your crackers,” versus an inviting, “Eat your crackers”). Children this age are only just beginning to be able to take conversational turns and are typically speaking in 2- to 3-word sentences (e.g., “I want cookie”), but much detail is lacking. By age 4 years, children know names for groups or categories (e.g., apples and oranges are both fruit), which has implications for teaching about healthy eating. They can express themselves using words like “because” or “if” (e.g., “I don’t like this food because it has spots on it.”) Children ask more “why” questions (e.g., “Why do I need to eat this?”), and their questions will become more abstract and complex (e.g., “If I eat this, can I have ice cream?”). By age 4 years, children are also able to understand and use words to express emotions (e.g., “I am scared to eat that.”) By age 5 years, children can proficiently talk about events that have happened in the past or will happen in Language the future, can follow directions with more than one step, and can engage more effectively in a conversation Development by taking turns. Therefore, children are able to begin to describe what they ate at a friend’s house or at preschool earlier that day, can request foods that they had at grandma’s house last week, and can ask about going out for ice cream later that day. When parents deliver prompts to children to eat, the prompts may become more complex with multiple steps as children better understand these multi-step instructions (e.g., “you need to eat your carrots and drink your milk before you can leave the table”). Children’s greater sophistication in conversations can contribute to lengthier negotiations in response to a command to eat their vegetables—instead of simply responding, “No,” or, “I don’t want to,” the child can now effectively engage in a multi-step, back-and-forth discussion with the parent. Children have also learned that using less direct language can be more effective in getting what they want—instead of saying, “I want that cookie,” the child has learned that saying, “Those cookies smell good. Could I have one?” is likely to be more effective. Between 5 and 8 years, children develop the ability to read, and therefore the ability to take in more written information about food (i.e., reading menus or food packages, and therefore also being newly influenced by written advertising). Between ages 2 and 3 years, children will become increasingly interested in modeling the behavior of others (i.e., eating like others eat). They tend to like routines and may become upset when routines are disrupted (e.g., when a snack is not offered at the usual time). Children are developing the ability to employ self-regulation strategies learned from previous experiences (e.g., distracting themselves while waiting for a snack). Children can begin to remember rules and can wait for a toy or a treat for about a minute and focus attention for about a minute. Children this age begin to understand that others can think and believe different things than they do (e.g., that when a parent thinks the soup is delicious, the soup may or may not be delicious in the child’s own opinion). By age 4 years, children can understand and relate to how others are feeling (e.g., recognize that one child is excited, and another child is sad that the birthday cake has fruit in it). By this age, children may begin feeling generous and share food with friends, and they more readily express their likes and dislikes (e.g., “She likes peas. I don’t like peas.”). Children this age prefer to play with other children and may be increasingly influenced by peer behaviors (e.g., the food preferences of preschool peers may particularly influence their food choices). At this age, children still cannot differentiate between real and make believe Social/Emotional (and may therefore be easily influenced by food advertising delivered by favorite characters). At this age, Development children typically can focus their attention for about 5 to 15 minutes. They can also describe ways to cope with anger or sadness. By age 5 years, children can use words to describe more complex emotions (e.g., “I’m jealous she has pizza.”). Children this age are better at managing strong emotions, and less likely to have tantrums. They are also better able to hide the truth (e.g., “I ate the broccoli,” even when it is in a napkin in their pocket). At this age, children become more adept at apologizing for inadvertent mistakes (i.e., “I’m sorry I spilled my milk.”). Between ages 5 and 8 years, children increasingly want to be liked and please their friends (and may therefore become increasingly influenced by the eating behaviors of peers). They are spending more time with peers who have a growing influence on eating behavior. Children this age tend to test boundaries, but are generally still eager to please and begin to experience embarrassment (i.e., sneaking a cookie, and then being embarrassed when they are found out). At this age, children are often able to disguise emotions when they are upset (e.g., pretend to like the dinner served at a friend’s house). Evidence-Based Recommendations and Best Practices for | October 2021 11 Promoting Healthy Eating Behaviors in Children 2 to 8 Years
Dietary Patterns of Children Ages 2 to 8 Years Table 5. Recommended Intakes The food and beverages children consume have a profound Age 2-4 Years 5-8 Years influence on their health and development. Because children do not consume nutrients in isolation, it is important to look Males Females Males Females at dietary patterns—the combinations of foods consumed over time. A healthy dietary pattern is needed for children to meet Energy (kcal) a 1,000- 1,000- 1,200- 1,200- nutrient and energy needs and to support healthy weight and 1,600 1,400 2,000 1,800 prevention of chronic disease. Establishing a healthy dietary pattern early in life is critical in order to lay the foundation for Food Group Servings healthy dietary patterns that continue across the lifespan. Table 5 outlines healthy dietary patterns for males and females 2 to 8 Vegetables 1.0-2.0 1.0-1.5 1.5-2.5 1.5-2.5 years of age. Goals for food group intakes are based on calorie (cup eq/day) needs, which vary by age, sex, height, weight, and activity level; this is why ranges of intake are listed for each food group. Fruits 1.0-1.5 1.0-1.5 1.0-2.0 1.0-1.5 (cup eq/day) The 2020-2025 Dietary Guidelines for Americans (DGA)18 Whole Grains defines a healthy U.S.-style dietary pattern as including: (1) 1.5-3.0 1.5-2.5 2-3 2-3 (ounce eq/day) vegetables of all types—dark green, red, and orange; beans, peas, and lentils; starchy; and other vegetables; (2) fruits, especially Dairy (cup eq/day) 2.0-2.5 2.0-2.5 2.5 2.5 whole fruit; (3) grains, at least half of which are whole grains; (4) dairy, including fat-free or low-fat milk, yogurt, and cheese, Protein Foods 2-5 2-4 3-5.5 3-5 and/or lactose-free versions and fortified soy beverages and (ounce eq/day) yogurt as alternatives; (5) protein foods, including lean or low-fat meats and poultry, eggs, seafood, beans, peas, lentils, Oils (g/day) 15-22 15-17 17-24 17-22 nuts, seeds, and soy products; and (6) oils, including vegetable oils and oils in foods, such as seafood and nuts. Foods in such Dietary Components to Limit healthy dietary patterns are assumed to be in nutrient-dense forms and prepared with minimal added saturated fat, added Saturated Fat (% of total calories 10 10 sugars, refined starches, or sodium (salt). not to exceed) The current dietary patterns of children aged 2 to 8 years do Added Sugars not align with the recommendations put forth by the 2020- (% of total calories 10 10 2025 DGA.18 For example, by 2 years of age, a child is more not to exceed) likely to eat processed foods high in sodium and added sugar than fruits or vegetables on any given day.30 The Healthy Eating 1,200 (age 2-3) Index (HEI) score, a diet quality measure that assesses how well Sodium (mg/day)b 1,500 dietary intakes align with the Dietary Guidelines for Americans, 1,500 (age 4) highlights the need for dietary improvements in children across all developmental periods. In children 2 to 8 years of age, the Acronyms and abbreviations: EER = estimated energy requirement; eq = cup-equivalents; kcal = kilocalories; mg = milligrams average HEI scores range from a low of 55 (ages 5-8) to a high of 61 (ages 2-4) on a scale of 0 to 100, indicating that overall Footnotes: children’s diet quality is poor.18 a = Energy needs vary based on many factors, including age, sex, height, weight, and activity level. To estimate specific energy needs for an individual, please refer to the DRI Calculator for Healthcare Figure 3 illustrates the percentage of U.S. children ages 2 Professionals, available at nal.usda.gov/fnic/dri-calculator. to 3 and 4 to 8 who are below, at, or above dietary goals for b = Recommendation is to reduce intakes if above these values, which food group intakes. Fifity to sixty percent of these children are the Chronic Disease Risk Reduction Intakes established by the meet intake recommendations for fruit, but less than 15 National Academies of Sciences, Engineering, and Medicine in the DRIs percent and 7 percent do so for vegetables and whole grains, for Sodium and Potassium, published by the National Academies Press in 2019. respectively. Fifty-one percent of 2- to 3-year-old children meet recommendations for dairy intake, but this number drops Source: Dietary Guidelines for Americans, 2020-2025. Table 3-1: to 27 percent among 4- to 8-year-old children. Seventy-two Healthy U.S.-Style Dietary Pattern for Children Ages 2 Through 8, percent of 2- to 3-year-olds and 63 percent of 4- to 8-year-olds With Daily or Weekly Amounts From Food Groups, Subgroups, and Components, page 74 meet recommendations for protein foods.31 These less-than- 12 October 2021 | Technical Report
Figure 3. Dietary Intakes Compared to Recommendations: Percent of US Children Who Are Below, At, or Above Each Dietary Goal or Limit Figure 3a. Ages 2-3 intake below rec or above limit – Male intake at/above rec or below limit – Female Fruit Vegetables Whole Grain Dairy Protein Added Sugar* Sodium* Saturated Fat* *Ages 1-3 -100 -80 -60 -40 -20 0 20 40 60 80 100 Figure 3b. Ages 4-8 intake below rec or above limit – Male intake at/above rec or below limit – Female Fruit Vegetables Whole Grain Dairy Protein Added Sugar Sodium Saturated Fat -100 -80 -60 -40 -20 0 20 40 60 80 100 Evidence-Based Recommendations and Best Practices for | October 2021 13 Promoting Healthy Eating Behaviors in Children 2 to 8 Years
optimal intake patterns are related to inadequate intakes of Figure 4a. Distribution of Snack Occasions for Males and nutrients such as calcium, potassium, vitamin D, and fiber that Females 2-5 Years of Age are important for children’s growth and development. Because of documented disparities in diet quality by race, ethnicity, 30% Males income, and education, some children are at a higher risk of Females 25% consuming a poor-quality diet.31,32 20% Additionally, the DGAs recommend that children limit intakes of added sugar as well as saturated fat to less than 10 percent 15% of daily energy, and to reduce intakes of sodium that are above 1,200 mg/day (ages 2-3) or 1,500 mg/day (ages 4-8). Only 10% about half of younger (ages 1-3) and close to one-quarter of 5% older (ages 4-8) children meet the recommendation for added sugar,31 and about 15 percent (ages 1-3) and 12 percent (ages 0% 4-8) of children meet the recommendation for saturated fat.33 0 1 2 3 4 5 6 7+ Only about 6 percent of children ages 1-3 and 4 percent of Number of Daily Snack Occasions children ages 4 to 8 meet sodium recommendations.34 With regard to the context of young children’s nutrient intakes, almost one-third of daily calories (29% for males and 28% for Figure 4b. Distribution of Snack Occasions for Males and females) for children 2 to 5 years old are contributed by foods Females 6-11 Years of Age and beverages consumed during snacks. Among children 6 to 11 30% Males years of age, approximately one-quarter of daily calories (26% Females for males and 24% for females), are contributed by foods and 25% beverages consumed during snacks.35 This is not surprising given 20% that among children ages 2 to 5, 52 percent of males and 45 percent of females consume 3 to 4 snacks per day, and among 15% children ages 6 to 11, 41 percent of males and 38 percent of females consume 3 to 4 snacks per day (Figures 4a and 4b).35 10% It is also noteworthy that a considerable portion of young 5% children’s daily calories are contributed by foods and beverages consumed away from home. Among children 2 to 5 years of 0% 0 1 2 3 4 5 6 7+ age, 25 percent and 27 percent of calories consumed by males Number of Daily Snack Occasions and females, respectively, are contributed by these foods. Among children 6 to 11 years of age, 33 percent and 38 percent of calories consumed by males and females, respectively, are from Source: U.S. Department of Agriculture ARS. Snacks: Percentages foods and beverages consumed away from home.36 of Selected Nutrients Contributed by Food and Beverages Consumed at Snack Occasions, by Gender and Age, What We Eat in America, NHANES 2017-2018. 2020. (https://www.ars.usda.gov/ARSUser- Childhood obesity has been a significant health problem for Files/80400530/pdf/1718/Table_29_DSO_GEN_17.pdf). the past 30 years and is undoubtedly related to children’s poor dietary patterns. According to the National Health and Nutrition Examination Survey,32 between 1999-2000 and 2017-2018 prevalence of obesity has plateaued among children younger than 2 years of age at about 9 percent and at about 14 percent for children 2 to 5 years of age. In contrast, prevalence of obesity has increased during this time among children ages 6 to 19 years. Between 1999-2002 and 2015-2018, the prevalence of obesity among children aged 6 to 11 years increased from nearly 16 percent to more than 19 percent, and youth aged 12 to 19 years experienced an increase from 16 percent to nearly 21 percent. Early data from 2020 are showing further increases in child overweight and obesity during the COVID-19 pandemic, with the greatest changes being among children ages 5 to 11.37 14 October 2021 | Technical Report
Rates of obesity among children of color are disproportionately Taste preferences vary from person to person. Sensitivity higher than rates among white children, and have continued to to bitterness, in particular, is known to vary greatly among increase across all ages for the past 30 years.38 For comparison, individuals; one person may detect bitterness at a low only 3 percent to 4 percent of U.S. children ages 2 to 5 and 6 to concentration whereas another may be insensitive to its taste or 11 years are classified as underweight (defined as sex- and age- require very high concentrations to detect it. Genetic variation specific BMIC being less than the fifth percentile).39 in the TAS2R38 gene produces individual differences in sensitivity to the bitter tastants,60 such as 6-n-propylthiouracil The overall pattern suggests that accumulated lifetime exposures (PROP).61 Children who exhibit sensitivity to the bitter taste (biological, behavioral, environmental, and systemic) continue of PROP tend to have lower liking and intake of some raw to drive ongoing increases in obesity prevalence across the life vegetables (e.g., spinach and broccoli), while also tending to course. Obesity, once established, is very likely to persist.40 have higher liking/intakes of sweet foods and consume less fat Understanding the development of obesity and how to support than non-tasters.58,61 Individual differences in taste preferences healthy eating behaviors in childhood is essential. Further, for bitterness as well as sweetness have been found to differ understanding the development of food acceptance and based on age, race/ethnicity, family history of addiction/ healthy appetites among children is foundational to multi- depression, and taste receptor genotype.56,62,63 Children with level approaches to prevent obesity and support healthy eating sensitivity to bitter tastes may require additional strategies to behaviors in childhood. learn to like some healthful foods with bitter taste profiles such as using dips and sauces, using preparation methods that yield Development of Food Acceptance during Childhood milder tastes, and reinforcing children’s willingness to try foods through praise and/or small non-food rewards.58,64 Children eat what they like and like what they know.41 Young children’s intake of foods is closely aligned with food The biology of taste provides a foundational guide for food preferences,42-44 underscoring the fundamental role the acceptance; however, children’s experiences and learning in their development of healthy food preferences plays in promoting early eating environments shape the course of food preferences healthful eating patterns. A large body of research shows that and eating habits. For example, children’s heightened children are born with innate preferences for taste that predispose preferences for the taste of sweet compared with those of adults them to readily like some foods and be initially wary of others.45-47 enhances the atrractiveness and ready acceptance of foods high Preferences for food, on the other hand, are learned through in sweetness.65-70 Yet children also develop liking and preferences experiences that are inherently social in nature, highlighting the for foods through associative learning and familiarization that powerful role of caregivers and the family eating environment in occur as they accumulate eating experiences, underscoring the shaping children’s acceptance of healthful foods.14,48 The nature role of the family and socialization of eating behaviors.71,72 For of children’s eating experiences varies with the contexts in which instance, sweet foods are often provided to children as treats or eating occurs as well as the people with whom children eat and rewards for good behavior, providing social reinforcement of generally reflects a wide range of family, cultural, and broader children’s liking for foods they are biologically predisposed to socio-environmental and socio-economic influences. find attractive.73,74 Further, food media advertisements targeting children have been shown to encourage children’s liking of, Taste Preferences requests for, intake of, and loyalty to advertised brands and the Biologically programmed taste preferences provide a strong unhealthy foods which are typically featured. foundation for food acceptance in childhood. Newborns show distinct preferences for sweet and umami tastes and initial Food Neophobia rejection of sour and bitter tastes.47,49 These predispositions A common challenge to the acceptance of healthful foods during are thought to have evolved to favor survival by encouraging childhood is food neophobia, defined as fear of or reluctance consumption of energy-rich foods and discouraging consumption to eat new foods.6,75 The degree of food neophobia changes as of toxins and spoiled foods. Taste preferences change as a child develops, with relatively low levels seen in late infancy development proceeds across childhood. For instance, children during the introduction to complementary foods. However, have heightened preferences for salt,50,51 sweetness,51-53 and sour54 children show pronounced and normative increases in food in comparison to adults.38,53-57 Children also show heightened neophobia during toddlerhood and preschool years, where levels sensitivity for some bitter tastes throughout early childhood into are at the highest point seen across the lifespan.76 During this adolescence.55,58 These patterns underscore that children establish time, children may be reluctant to try and accept new foods and eating habits in a fundamentally different sensory world than become more selective about the foods they are willing to try adults, with normative tendencies to prefer sweet foods and reject and eat.77,78 Reflecting biological taste predispositions, children bitter tasting foods like some vegetables.55,59 may be particularly wary of some healthful foods like vegetables that are not terribly sweet, are not energy-rich, and can often be bitter.79 These normative trends are a common cause of concern Evidence-Based Recommendations and Best Practices for | October 2021 15 Promoting Healthy Eating Behaviors in Children 2 to 8 Years
for many parents when children become more limited in what around behavior but also through a variety of behaviors that they are willing to eat and show resistance to try new foods. For shape children’s exposure to new and healthful foods. Like food most children food neophobia is relatively short-lived and tends neophobia, many children show signs of picky eating during to diminish with age as children enter the school years.76 early childhood that tend to lessen with age.68,112 Picky eating Development of Healthy Appetites and Growth during A related challenge to acceptance of healthful foods during Childhood childhood is picky eating. Although there is not agreement in the field on a formal definition of picky eating (also known Children’s regulation of eating behaviors reflects complex and as “food fussiness”),76,80,81 the most commonly accepted dynamic interactions between biology and the environment. definition is the rejection of a substantial amount of foods It has historically been believed that children are born with that are familiar (as well as unfamiliar).76,82-89 Picky eating is an innate capacity to regulate their own eating behavior. For generally considered to consist of three key characteristics: (1) example, in some controlled research studies, young children consuming a limited variety (food selectivity)65,69,70,76,89-103 and demonstrated an ability to self-regulate short-term energy intake amount of foods;76,90-94,104 (2) rejecting foods based on certain by making adjustments to subsequent food intake in response sensory characteristics (appearance, aroma, feel, texture, or to the energy content of foods previously consumed.114,115 A flavor),69,76,84,90,91 often requiring the preparation or presentation growing body of evidence, however, has demonstrated that this of meals in a very particular way;65,69,90,92,95-99 and (3) capacity varies widely among children and at younger ages than unwillingness to try new foods (food neophobia).76,79,88,91,105-107 previously thought.115 Children’s capacity to regulate intake Some have hypothesized that picky eating could be only parent has been shown to be influenced by the types and amounts of perception,96 but observational and experimental studies provide foods available, the social aspects of the eating environment, some validation,66,92,98 for example by indicating that picky eaters and children’s behavioral and biological predispositions consume a lower variety of vegetables69,92 and have lower total towards eating. intakes of vegetables.69 Appetite is defined as an instinctive or natural desire to eat. The varying definitions result in an unclear prevalence of picky Behavioral predispositions towards eating are broadly described eating. Of the 25 percent of children identified by parents to in terms of food approach and food avoidance. Food approach have feeding difficulties, only an estimated 1 to 5 percent meet is defined as a combination of behaviors characterized by food criteria for a feeding disorder.67,94,108,109 Avoidant restrictive food responsiveness (i.e., the degree to which external food cues intake disorder (ARFID), also described as extreme picky eating encourage an individual to eat) and the reinforcing value of where a child does not consume enough calories to grow and food (i.e., the willingness to consciously work to obtain food).10 develop properly, was added to the Diagnostic and Statistical Some examples of food approach behaviors include eating in the Manual of Mental Disorders V (DSM-V) in 2013 and requires absence of hunger (i.e., the number of calories a child consumes one or more of the following: (1) significant weight loss, when palatable foods are offered following a satiating meal) and faltering growth, or nutritional deficiency; (2) dependence on emotional eating (i.e., greater likelihood of eating in response enteral feeding or oral nutritional supplements; or (3) marked to negative affect). Food avoidance is defined as a combination interference with psychosocial functioning. The prevalence of of behaviors characterized by satiety sensitivity (i.e., the degree ARFID and effective treatment modalities is an active area of to which one is capable of ceasing consumption in response research. Treatment of ARFID is outside the scope of this report. to internal signals—typically conceptualized as signals from the gut).10 Children with picky eating tend to have lower intakes of vegetables,69,79,92,110 some micronutrients (iron, zinc), and Observational studies indicate that children with higher levels fiber.68 Importantly, however, picky eating does not have a of food approach or motivation to eat tend to have higher body consistent association with weight status and growth.6,68,111 mass index,10,116-122 whereas children with higher levels of food Picky eaters show higher levels of negative affect, and sensory avoidance tend to have poorer diet quality. These behavioral sensitivities to sight, sound, taste, smell, touch, and pain.78 predispositions are thought to be shaped, in part, by genetic Picky eating has also been shown to be related to dimensions influences and have trait-like qualities. Individual differences of child temperament including children’s enjoyment of novel in eating behaviors are reliably observed by parents beginning experiences and sociability. While picky eating appears to have in infancy and track over time. Furthermore, twin and family a trait-like, heritable component,88,112 it also has been associated studies provide evidence that eating behaviors reflecting appetite with caregiver characteristics, including caregiver neophobia, are heritable or under genetic influence. Therefore, the evidence dietary restraint, external cue eating, dietary intake, and for promoting healthy appetites in children necessarily overlaps home availability.6,113 These observations highlight caregivers’ with the evidence for preventing and treating childhood obesity. influence on not only contributing to genetic predispositions 16 October 2021 | Technical Report
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